Findings as to causes and contributing factors:1. During approach to landing on the previous flight, the right-wing leading-edge and wing tip were damaged by impact with several trees.2. The damage to the aircraft was not evaluated or inspected by qualified personnel prior to take-off.3. Cumulative unmanaged stressors disrupted the pilot's processing of safety-critical information, and likely contributed to an unsafe decision to depart with a damaged, uninspected aircraft.4. The aircraft was operated in a damaged condition and departed controlled flight likely due to interference between parts of the failing wing tip, acting under air loads, and the right aileron.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.